T. L. V. (Threshold Limit Value) of methyl isocyanate responsible for Bhopal gas

T L V Threshold Limit Value Of Methyl Isocyanate Responsible Biology Question

T. L. V. (Threshold Limit Value) of methyl isocyanate responsible for Bhopal gas tragedy is

Options

(a) 0.002 ppm
(b) 0.02 ppm
(c) 0.2 ppm
(d) 0.005 ppm

Correct Answer:

0.02 ppm

Explanation:

Methyl isocyanate is a volatile, toxic chemical used to manufacture carbamate pesticides. Bhopal gas tragedy (3rd Dec. 1984) is a case of air pollution in which MIC (Methyl Isocyanate) gas released from a fertilizer manufacturing plant of Union Carbide caused death of approximately 2500 persons. MIC causes irritation in eyes which may result in blindness, various lung diseases may result in death. Workers exposed to the MIC 8-hour threshold limit value of 0.02 ppm (46 μg/m³) are exposed to approximately 460 mg MIC in a workday.

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Topics: Conservation and Environmental Issues (111)
Subject: Biology (4253)

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